Air filter cartridge



FIG. 1 is a perspective view of one face of the air filter frame.

FIG. 2 is a face view of one side of the air filter frame.

FIG. 3 is a face view of the opposite side to the side of FIG. 2.

FIG. 4 is a left edge view of the filter frame.

FIG. 5 is a right edge view of the filter frame.

FIG. 6 is a top edge view of the filter frame; and,

FIG. 7 is a bottom edge view of the filter frame. 

The ornamental design for an air filter cartridge, as shown and described. 